The SIM Interposer works by adding a EEPROM chip to your SIM card just like a TurboSIM. You then call 112, a number that can be called from any GSM phone, free of charge, with or without a SIM card on any compliant network. Once the call connects you hang up then toggle Airport mode on and off. When the network connection resumes you will be unlocked.

This method of unlocking is not recommended due to the legality of dialing 112 in certain countries. You can learn more about how the unlock works here.

Dev team is still waiting for apple to give them the unlock. One hacker worried about the legality of another is a joke!. Dev team wont get the unlock until At&t gives apple the nod (not til end of june).

http://iphoneblogr.com JaeM1llz

I think you are confused about how the unlock process works. Apple doesn’t give the dev team anything. The dev team finds an exploit and develops a tool for the end-users to utilize that exploit in order to unlock the baseband. It has nothing to do with AT&T or Apple.